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Active thermography for potato characterization
SPIE Proceedings, 2008This paper describes the design of a semi-automated heating and scanning system and analytic method for potato characterization. Potatoes are heated using lamps in a heating chamber and then transferred on a movable fixture to an imaging chamber. A non-linear model was designed to predict which potatoes have excessive sugar defects and the model was
Sheng-Jen Hsieh, Chih-Chen Sun
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Domain derivative approach to active infrared thermography
Inverse Problems in Science and Engineering, 2010A thin conducting plate has an inaccessible side in contact with aggressive external agents. On the other side, we are able to heat the plate and take temperature maps in laboratory conditions. Detecting and evaluating damages on the inaccessible side from thermal data requires the solution of a nonlinear inverse problem for the heat equation in ...
Bison P, Ceseri M, Fasino D, Inglese G
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Automated Dynamic Inspection Using Active Infrared Thermography
IEEE Transactions on Industrial Informatics, 2018Active thermography is a proven technology used in a wide variety of applications. In the most common approach using a static configuration, the elements involved in the inspection do not move. This presents serious drawbacks when it is applied to the inspection of large products and machines.
Ruben Usamentiaga +5 more
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Railroads Surface Crack detection using Active Thermography
2021 International Bhurban Conference on Applied Sciences and Technologies (IBCAST), 2021Rails are basic mode of transportation all over the world. In-service railway lines are inspected for cracks on a prescribed frequency for damage diagnostics. The conventional methods of cracks detection of such large structure are either semi- automated or manual which make inspection process time consuming.
Bilawal Ramzan +3 more
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Active Thermography in Through-Life Engineering
2014With the increased use of high-value components in aerospace industries, there is huge emphasis on reliability as their failure in service could lead to catastrophic failure of the system. Thus, there continues to be increasing dependency of such high-value components to undergo critical maintenance routines in order to reduce the probability of ...
Sri Addepalli, Lawrence Tinsley
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Laser active thermography for non-destructive testing
SPIE Proceedings, 2013Thermography methods have found their applications in different fields of human activity. The non-destructive feature of these methods along with the additional advantage by automated remote control and tests of nuclear installations without personnel attendance in the contaminated zone are of particular interest.
A. Semerok +3 more
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Thin plate approximation in active infrared thermography
Inverse Problems in Science and Engineering, 2014In this work, we find and test a new approximated formula (based on the thin plate approximation), for recovering small, unknown damages on the inaccessible surface of a thin conducting (aluminium) plate. We solve this inverse problem from a controlled heat flux and a sequence of temperature maps on the accessible front boundary of our sample.
Inglese G, Clarelli F
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Improved ultrasound activated thermography using frequency analysis
Quantitative InfraRed Thermography Journal, 2007Ultrasound activated thermography is based on intense acoustic wave interaction with defects. Internal friction in defect areas results in a local temperature rise. The lockinapproach is applied by using a low-frequency amplitude modulation of acoustic excitation to enhance the sensitivity of detection of weak heat sources (ultrasound lockin ...
Andreas Gleiter +2 more
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Active Dynamic Thermography in Medical Diagnostics
2017This is an overview of active thermal imaging methods in medical diagnostics using external thermal stimulation. In this chapter, several clinical cases diagnosed using the active dynamic thermography method, ADT, are presented. Features of this technology are discussed and main advantages underlined.
Mariusz Kaczmarek, Antoni Nowakowski
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Quantitative Determination of Porosity by Active Thermography
AIP Conference Proceedings, 2007We present a new approach based on Active Thermography by which it is possible to produce images of porosity in Carbon Fibre Reinforced Plastics that correspond striking well with results obtained by ultrasonic testing. We applied the method of Pulsed Thermography by using flashes of light for the generation of heat.
G. Hendorfer +4 more
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